Originally Posted by dddenio
Jshira, Before I added Hellwig sway bar, The only thing that would improve handling while pulling 29' enclosed trailer was airing tires to 80psi. The D's that were on there stock "aired to the max" were uncomfortable to tow with. E's at 60 psi towed the same as D's at 60psi. For me the E's (80psi) helped a bunch & I wasn't anywhere near loaded capacity.
Yes, that makes sense. E's have an extra 2 plys in the sidewalls, which makes the sidewalls stiffer. I'm sure the E's are less squirmy.
The tires that I wanted only came in D's. I would have gotten E's otherwise.